Comparison between rigid and soft poly-articulated prosthetic hands in non-expert myo-electric users shows advantages of soft robotics

Abstract Notwithstanding the advancement of modern bionic hands and the large variety of prosthetic hands in the market, commercial devices still present limited acceptance and percentage of daily use. While commercial prostheses present rigid mechanical structures, emerging trends in the design of...

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Main Authors: Patricia Capsi-Morales, Cristina Piazza, Manuel G. Catalano, Giorgio Grioli, Lisa Schiavon, Elena Fiaschi, Antonio Bicchi
Format: Article
Language:English
Published: Nature Portfolio 2021-12-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-021-02562-y
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author Patricia Capsi-Morales
Cristina Piazza
Manuel G. Catalano
Giorgio Grioli
Lisa Schiavon
Elena Fiaschi
Antonio Bicchi
author_facet Patricia Capsi-Morales
Cristina Piazza
Manuel G. Catalano
Giorgio Grioli
Lisa Schiavon
Elena Fiaschi
Antonio Bicchi
author_sort Patricia Capsi-Morales
collection DOAJ
description Abstract Notwithstanding the advancement of modern bionic hands and the large variety of prosthetic hands in the market, commercial devices still present limited acceptance and percentage of daily use. While commercial prostheses present rigid mechanical structures, emerging trends in the design of robotic hands are moving towards soft technologies. Although this approach is inspired by nature and could be promising for prosthetic applications, there is scant literature concerning its benefits for end-users and in real-life scenarios. In this work, we evaluate and assess the role and the benefits of soft robotic technologies in the field of prosthetics. We propose a thorough comparison between rigid and soft characteristics of two poly-articulated hands in 5 non-expert myo-electric prosthesis users in pre- and post-therapeutic training conditions. The protocol includes two standard functional assessments, three surveys for user-perception, and three customized tests to evaluate the sense of embodiment. Results highlight that rigid hands provide a more precise grasp, while soft properties show higher functionalities thanks to their adaptability to different requirements, intuitive use and more natural execution of activities of daily living. This comprehensive evaluation suggests that softness could also promote a quick integration of the system in non-expert users.
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spelling doaj.art-ac51fe1057e146fcbf305e7349d749af2022-12-21T18:45:49ZengNature PortfolioScientific Reports2045-23222021-12-0111111510.1038/s41598-021-02562-yComparison between rigid and soft poly-articulated prosthetic hands in non-expert myo-electric users shows advantages of soft roboticsPatricia Capsi-Morales0Cristina Piazza1Manuel G. Catalano2Giorgio Grioli3Lisa Schiavon4Elena Fiaschi5Antonio Bicchi6Istituto Italiano di TecnologiaTechnical University of MunichIstituto Italiano di TecnologiaIstituto Italiano di TecnologiaDepartment of Translational Research and New Technologies in Medicine and Surgery, University of PisaOperational Unit of Recovery and Functional Rehabilitation, Usl Toscana NordOvestIstituto Italiano di TecnologiaAbstract Notwithstanding the advancement of modern bionic hands and the large variety of prosthetic hands in the market, commercial devices still present limited acceptance and percentage of daily use. While commercial prostheses present rigid mechanical structures, emerging trends in the design of robotic hands are moving towards soft technologies. Although this approach is inspired by nature and could be promising for prosthetic applications, there is scant literature concerning its benefits for end-users and in real-life scenarios. In this work, we evaluate and assess the role and the benefits of soft robotic technologies in the field of prosthetics. We propose a thorough comparison between rigid and soft characteristics of two poly-articulated hands in 5 non-expert myo-electric prosthesis users in pre- and post-therapeutic training conditions. The protocol includes two standard functional assessments, three surveys for user-perception, and three customized tests to evaluate the sense of embodiment. Results highlight that rigid hands provide a more precise grasp, while soft properties show higher functionalities thanks to their adaptability to different requirements, intuitive use and more natural execution of activities of daily living. This comprehensive evaluation suggests that softness could also promote a quick integration of the system in non-expert users.https://doi.org/10.1038/s41598-021-02562-y
spellingShingle Patricia Capsi-Morales
Cristina Piazza
Manuel G. Catalano
Giorgio Grioli
Lisa Schiavon
Elena Fiaschi
Antonio Bicchi
Comparison between rigid and soft poly-articulated prosthetic hands in non-expert myo-electric users shows advantages of soft robotics
Scientific Reports
title Comparison between rigid and soft poly-articulated prosthetic hands in non-expert myo-electric users shows advantages of soft robotics
title_full Comparison between rigid and soft poly-articulated prosthetic hands in non-expert myo-electric users shows advantages of soft robotics
title_fullStr Comparison between rigid and soft poly-articulated prosthetic hands in non-expert myo-electric users shows advantages of soft robotics
title_full_unstemmed Comparison between rigid and soft poly-articulated prosthetic hands in non-expert myo-electric users shows advantages of soft robotics
title_short Comparison between rigid and soft poly-articulated prosthetic hands in non-expert myo-electric users shows advantages of soft robotics
title_sort comparison between rigid and soft poly articulated prosthetic hands in non expert myo electric users shows advantages of soft robotics
url https://doi.org/10.1038/s41598-021-02562-y
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